Feed-water purifier



S.. N E V B T S IW A. d. d nu M 0 W FEED WATER PUEIEIEE.

No. 331,917. Patented. Deo. 8. 1885.

M PETERS. Photo-Lhngnprwr, wamingmn. n. C4

Uni'rnn STaTns PATENT @erica ANDREXV JACKSON STEVES, OF SACRAMENTO,CALIFORNIA.

FEED-WATE R PURIFIER.

SPECIFICATION forming part of Letters Patent No. 331,917, dated December8, 1885.

Application tiled June *22, 1885.

To all whom, it may concern:

Beit known that I, ANDREW J. Srnvnns, of Sacramento, Sacramento county,State of California, have invented an Improvement in Feed W'ater-Iurifiers; and I hereby declare the following` to be a full, clear, andexact description of the same.

My invention relates to a feedwatcr purier for steanrboilers.

It consists of an inner shell into which water is admitted, and withinwhich it is heated so as to rise to the top, where it passes throughperi'orations into an exterior inelosing-shell, between which and theinner one it descends, passing through holes in the bottom of theannular space into the boiler. A perforated blow-oft` tube extends alongthe bottom of the inner chamber, and through this the deposited sedimentmay be discharged from time to time by means of'a suitable cock.

Referring to the accompanying drawing for a more complete explanationoi' my invention, the iigure is a vertical section taken through myapparatus.

In the present case I have shown my ap paratus similar in form toasteam-dome, such as is used upon locomotive engines and ap plied to thetop'of the boiler; but it will be manifest that the device might be madein any suitable or desirable form which would preserve the conditions ofits construction, and placed anywhere near the boiler, so as to beconnected with its steamspace in the proper manner. The outside shell,B, of the purifier is made of boiler-plate, so as to be equally asstrong as the boiler. This shell is riveted, bolted, or otherwisesecured upon the top of the boiler,and an inner receptacle or shell, D,is iixed within it, so as to leave an annular space around its sides anda space above the top between the two. Holes O are made through theboiler A, so as to make a commu nication from the annular space betweenthe shells to the interior of the boiler. Outside ofthe whole is acasing, C, which serves to cover and protect the apparatus from air,andalso to prevent condensation.

E and F are pipes through which water is pumped or injected into theinterior of the chamber D. H is a horizontal pipe extending into theinterior chamber close to the bot- Serinl No. 169,485. (No model.)

tom. This pipe has its inner end closed, and holes or perforations aremade in its lower side in close proximity to the bottoni of the chamber,so that when the blow-ott' cock G is open the sediment which has beendeposited in the bottom of the chamber will be blown out through thispipe. The operation will then be as follows VVat-er is introducedthrough the pipe F into the inner chamber, D. Being cold when it firstenters, it will remain for a time nearthe bottom; but as itgraduallybecomes heated and is brought to the boiling-point it rises andoverflows through smali openings d cl at the top of the interior chamberor receptacle. All impurities contained or suspended in the water willbe precipitated to the bottom of this chamber, from which they may beblown ont through thc pipe H, as before described. The puriiied water,after passing into the space between the outer and inner chambers, B andD, iiows over the top of the internal reservoir and down through theannular space between the two, thence into the boiler through theopenings O O. The top ofthe outer casing, B, may have an opening and acover, L, which can be removedv at pleasure for the purpose oi'examining the interior. The external portion, B, ofthe casing is stayedby bolts S whenever it is necessary.

I, J, and K arc ornamental portions of the exterior casing.

It will be manifest that this apparatus may be varied considerably inform without essentially altering its characteristics or operation.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. A purifier forfeed-water for boilers, consisting ot' an inner chamberwith a closed bottom into which the water is iirst received, havingperforations or openings inthe top, an annular orsurrounding chamberinto which the water enters through these openings after being heated,and holes or openings at the bottom of the annular intermediate spacethrough which the water passesinto the boiler, substantially as hereindescribed.

2. In a feed-water purifier for boilers, an outer and an inner chambersecured to or connected with the boiler, and having open IOO ings fromthe space between the two into the In Witness whereof lhave hereunto setmy boiler, openings in the top ofthe inner chamhand. ber leading intothe outer one, an inlet-pipe through which Water is admitted to theinner ANDREW JACKSON STEVENS. 5 chamber, and a blow-off pipe havingperforations in Close proximity with the bottom ofl Witnesses: the innerchamber, substantially as hereindel BERT. ANDREW VORTHINGTON,

GEO. R. DRIGGs.

scribed;

